Manufacturing Schedule Rescheduling for Urgent Task Insertion
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Solution Overview
Problem
Conventional production planning systems struggle with appropriately rescheduling tasks, especially in small-lot, high-mix production scenarios, and handling urgent tasks, leading to difficulties in determining optimal work orders and displaying preparation plans.
Innovation Solution
A production planning device with a task management unit, scheduling unit, rescheduling judgment unit, and schedule output unit that allows for dynamic rescheduling based on predefined conditions, including fixing and special conditions, and supports suspension and insertion of tasks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional production planning systems are used, then basic scheduling can be performed, but rescheduling capability is insufficient especially for urgent tasks and new orders
Solution Approach 1:
The patent implements dynamic rescheduling by allowing the scheduling system to adapt to changing conditions. The rescheduling judgment unit dynamically determines whether rescheduling is needed based on current production status, urgent tasks, and new orders, rather than using static fixed schedules. This enables the system to transition from rigid conventional scheduling to flexible adaptive scheduling.
Solution Approach 2:
The patent incorporates feedback mechanisms where the rescheduling judgment unit continuously monitors production status, urgent task requirements, and new order information. Based on this feedback, the system automatically triggers rescheduling when conditions warrant it, creating a closed-loop control system that improves adaptability without requiring complete system redesign.
2Speed
If production tasks are frequently rescheduled to handle urgent tasks and new orders, then responsiveness improves, but determination of optimal work order becomes difficult
Solution Approach 1:
The patent applies preliminary action by pre-establishing rescheduling judgment criteria and conditions before rescheduling events occur. The system has predefined rules for when rescheduling should be triggered, what factors to consider, and how to evaluate optimal work orders. This preparation enables rapid response to urgent tasks while maintaining systematic decision-making for optimal scheduling.
Solution Approach 2:
The patent utilizes parameter changes by adjusting scheduling parameters dynamically based on current conditions. When rescheduling is triggered, the system modifies work order parameters, priority levels, and scheduling constraints according to the specific situation (urgent tasks, new orders, production status). This allows responsive adaptation while maintaining optimal work order determination through structured parameter adjustment.
3Ease of operation
If conventional scheduling methods are used, then initial production plans can be created, but handling of urgent tasks requiring cancellation of in-progress production is difficult
Solution Approach 1:
The patent implements self-service by enabling the scheduling system to automatically handle urgent tasks without requiring manual intervention for every change. The rescheduling judgment unit autonomously evaluates whether urgent tasks require rescheduling, determines the appropriate actions (including cancellation of in-progress production when necessary), and executes the rescheduling. This automation improves ease of operation while maintaining reliability through systematic decision-making.
Solution Approach 2:
The patent applies beforehand cushioning by building in flexibility and buffer capacity into the scheduling system before urgent tasks occur. The rescheduling mechanism is pre-configured to handle disruptions, and the system maintains the ability to cancel or modify in-progress production without causing system failure. This preparation allows easy handling of urgent tasks while preserving production plan stability through controlled adaptation.
Data Source
AI summary
Conventionally, it has not been possible to appropriately reschedule production tasks. With a production planning device including: a task management unit in which two or more pieces of task information each being information corresponding to one or more task attribute values are stored; a scheduling unit that performs scheduling processing to acquire schedule information that specifies a production schedule for the two or more pieces of task information based on the one or more task attribute values of each of the two or more pieces of task information; a schedule output unit that outputs the schedule information; and a rescheduling judgment unit that judges whether or not a rescheduling condition is satisfied, wherein the scheduling unit performs the scheduling processing again in a case where the rescheduling judgment unit judges that the rescheduling condition is satisfied, and the schedule output unit outputs schedule information that is a result of the scheduling processing performed again.